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Investigating the Material Properties and Microstructural Changes of Fused Filament Fabricated PLA and Tough-PLA Parts

Naveed, Nida (2021) Investigating the Material Properties and Microstructural Changes of Fused Filament Fabricated PLA and Tough-PLA Parts. Polymers, 13 (9). p. 1487. ISSN 2073-4360

Item Type: Article

Abstract

Fused deposition modelling (FDM) is the popular but complex additive manufacturing process that works with many process parameters, which are crucial to investigate. In this study, 3D parts are fabricated by placing each filament layer in opposite direction to each other, for that two combinations of raster angles [45° -45°] and [0° 90°] along with three different infill speeds are used. In this study the two 3D printing material types - Polylactic Acid (PLA) and tough-PLA are used. The material properties of each 3D part are investigated to identify the best combination of these parameters. The microstructural analysis is also performed on outer and inner surfaces along with fracture interface of the parts after tensile testing using a scan-ning-electron-microscopy (SEM) to explain material failure modes and reasons. The results sug-gest that, for both the material types, the raster angle [45° -45°] produces the strongest parts compared to the raster angle [0° 90°]. This study also suggests that slow infill speed gives improve tensile properties by providing better inner-connection between two contiguous roasters. Thus, detailed analysis of microstructural defects correlated with tensile test results provided an insight on the optimisation of raster angle and infill speed, and scope for improvement of mechanical properties

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Depositing User: Nida Naveed

Identifiers

Item ID: 13464
Identification Number: https://doi.org/10.3390/polym13091487
ISSN: 2073-4360
URI: http://sure.sunderland.ac.uk/id/eprint/13464
Official URL: http://dx.doi.org/10.3390/polym13091487

Users with ORCIDS

ORCID for Nida Naveed: ORCID iD orcid.org/0000-0002-6857-1366

Catalogue record

Date Deposited: 07 May 2021 07:45
Last Modified: 07 May 2021 07:45

Contributors

Author: Nida Naveed ORCID iD
Author: Nida Naveed

University Divisions

Faculty of Technology > School of Engineering

Subjects

Engineering > Mechanical Engineering

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